The World Health Organization (WHO) has issued a stinging wake-up call to global leaders, revealing that nearly 40 per cent of all cancer cases recorded worldwide stem from entirely preventable risk factors. In a landmark global analysis released on Tuesday to mark World Cancer Day, the WHO and the International Agency for Research on Cancer (IARC) warned that nations are losing millions of citizens to a “preventable plague” that aggressive policy investment could easily halt.
The report identifies a staggering 7.1 million new cancer diagnoses in 2022, representing 37 per cent of the global total, as the direct result of controllable habits and environmental hazards. Tobacco use remains the world’s deadliest offender, fueling 15 per cent of all new cases, while infections and alcohol consumption follow closely behind. WHO Team Lead for Cancer Control, Dr. André Ilbawi, emphasized that these findings provide “actionable evidence” for governments and individuals to stop the disease before it starts, rather than waiting to manage expensive and often fatal late-stage diagnoses.
According to the data, which covers 185 countries and 36 cancer types, lung, stomach, and cervical cancers account for nearly half of all preventable cases globally. The study links lung cancer primarily to smoking and air pollution, while stomach and cervical cancers remain tied to infections like Helicobacter pylori and HPV, threats that vaccines and cleaner environments can effectively neutralize. Dr. Ilbawi noted that addressing just three factors—tobacco, alcohol, and infections—would dramatically slash the global cancer burden overnight.
The analysis further highlights a significant gender gap in cancer risk, with men facing a much higher preventable burden than women. While preventable causes link to 45 per cent of new cancer cases in men, the figure stands at 30 per cent for women. Smoking alone accounts for 23 per cent of male cancer cases, whereas infections and high body mass index (BMI) emerge as the leading preventable threats to women. Dr. Isabelle Soerjomataram, the study’s senior author, argued that these figures make prevention an “essential” mandate rather than an optional health strategy.
Alarmingly for the continent, the report reveals massive regional disparities, showing that sub-Saharan Africa suffers one of the highest preventable cancer burdens for women at 38 per cent. This spike underscores the urgent need for stronger tobacco control, alcohol regulation, and mass vaccination campaigns across the region. The WHO insists that by acting early, governments can spare millions of families the emotional and financial devastation of a cancer diagnosis while significantly reducing long-term healthcare costs.
